Kulich, K.R., Rydén, O., &Bengtsson, H. (1998). A descriptive study of how dentists view their profession and the doctor-patient relationship. ActaOdontologicaScandinavica, 56, 206-209.

Kulich, K.R., Berggren, U., &Hallberg, L. R.-M. (2000). Model of the dentist-patient consultation in a clinic specializing in the treatment of dental phobic patients: A qualitative study. ActaOdontologicaScandinavica, 58, 63-71.

Kulich, K.R., Berggren, U., et al (2001). Factor structure of the Dental Beliefs Survey in a dental phobic population. European Journal of Oral Sciences, 109, 235-240.

Kulich, K.R., Berggren, U., et al (2003). A qualitative analysis of patient-centered dentistry in consultations with dental phobic patients. Journal of Health Communication, 8, 171-187.

Kulich, K.R., Wiklund I.K., &Junghard, O. (2003). Factor structure of the Quality of Life in Reflux and Dyspepsia (QOLRAD) questionnaire evaluated in patients with heartburn predominant reflux disease. Quality of Life Research, 12, 699-708.

Kulich, K.R., et al. (2003). Psychometric validation of the German translation of Gastrointestinal Symptom Rating Scale (GSRS) and Quality of Life in Reflux and Dyspepsia (QOLRAD) questionnaire in patients with reflux disease. Health and Quality of Life Outcomes, 28, 1, 62.

Madisch, A., Kulich, K.R., et al. (2003). Impact of reflux disease on general and disease-related quality of life –  Evidence from a recent comparative methodological study in Germany. Z Gastroenterol, 41, 1137-43.

Kulich, K.R., Újszászy, L., Tóth, G. T., et al. (2004). Burden of illness in patients with reflux disease–evidence from a recent comparative methodological study in Hungary.OrvosiHetilap, 145, 13, Supplementum 2, 733-738.

Újszászy, L., Kulich, K.R., Tóth, G.T., et al. (2004). Psychometric validation of the Hungarian translation of the gastrointestinal symptom rating scale (GSRS) and quality of life in reflux and dyspepsia (QOLRAD) questionnaire in patients with reflux disease. OrvosiHetilap, 145, 13, Supplementum 2, 739-744.

Kulich, K.R., Calabrese C, Pacini F, et al. (2004). Psychometric Validation of the Italian Translation of the Gastrointestinal Symptom-Rating Scale and Quality of Life in Reflux and Dyspepsia Questionnaire in Patients with Gastro-Oesophageal Reflux Disease. Clin Drug Invest, 24, 205-215.

Piqué, J.M., Kulich, K.R., Vegazo, O., et al. (2004). Repercusión de la enfermedad en pacientes con reflujo gastroesofágico. Evidencia de un estudio metodológico reciente en España. / Burden ofgastroesophageal reflux disease. Evidence from a recent methodological study inSpain. GastroenterolHepatol, 27:300-6 (Spanish)

degl’ Innocenti, A., Hassing, L. B.,Ingelgård, A., Kulich, K.R., Wiklund, I. K. (2004). Measuring treatment satisfaction – A review of randomised controlled drug trials. Clinical Research &Regulatory Affairs, 21, 39-47.

Hedner, E., Carlsson J., Kulich, K.R., et al. (2004). An instrument for measuring health related quality of life in patients with Deep Venous Thrombosis (DVT): development and validation of Deep Venous Thrombosis Quality of Life (DVTQOL) questionnaire. Health and Quality of LifeOutcomes, 23, 2:30.

Longstreth, G.F., Bolus, R., Naliboff, B., Chang, L. Kulich, K.R., et al. (2005). Impact of irritable bowel syndrome on patients’ lives: development and psychometric documentation of a disease-specific measure for use in clinical trials. European Journal of Gastroenterology and Hepathology, 17, 411-420.

Kulich, K.R., Regula, J., Stasiewicz, J., et al. (2005). Psychometric validation of the Polish translation of Gastrointestinal Symptom Rating Scale (GSRS) and Quality of Life in Reflux and Dyspepsia (QOLRAD) questionnaire in patients with reflux disease.PolskieArchiwumMedycynyWewnetrznej, 113:241-9.

Regula. J., Kulich, K.R., Stasiewicz, J., et al. (2005). Obciazenie polskich pacjentow zwiazane z choroba refluksowa przelyku (Burden of illness in Polish patients with reflux disease). Przegląd Epidemiologiczny, 59, 75-85.

van Rensburg, C.J., Kulich, K.R., et al. (2005). What is the burden of illness in patients with reflux disease in South Africa? South African Gastroenterology Review, 3, 16-21.

Kulich, K.R., Pique, J.M., Vegazo, O., et al. (2005). Psychometric validation of the Spanish translation of Gastrointestinal Symptom Rating Scale (GSRS) and Quality of Life in Reflux and Dyspepsia (QOLRAD) questionnaire in patients with reflux disease. RevistaClínica Española,205:588-95

van Rensburg, C.J., Kulich, K.R., et al. (2006). Psychometric validation of the Afrikaans translation of two patient-reported outcomes instruments for reflux disease. South African Gastroenterology Review, 4, 5-9.

Kulich, K.R., Madisch, A., et al (2008).Reliability and validity of the Gastrointestinal Symptom Rating Scale (GSRS) and Quality of Life in Reflux and Dyspepsia (QOLRAD) questionnaire in dyspepsia: a six-country study. Health Qual Life Outcomes. 31;6-12.

Halling, K., Kulich K.R., Carlsson, J., Wiklund, I.(2008). An international comparison of the burden of illness in patients with dyspepsia. Dig Dis. 26(3):264-73.

Härdén, M., Nyström, B., Kulich, K.R. et al (2009). Validity and reliability of a new, short symptom rating scale in patients with persistent atrial fibrillation. Health and Quality of Life Outcomes. 7:65.